Home / 211,061.50-291,264.90-121,637.50

Finding the Fourth Proportional to 211,061.50, 291,264.90 and 121,637.50

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Solution

The fourth proportional to 211,061.50, 291,264.90 and 121,637.50 is: 167,859.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,061.50 : 291,264.90 = 121,637.50 : x
  2. Step 2: Convert to fraction form
    211,061.50/291,264.90 = 121,637.50/x
  3. Step 3: Cross multiply
    211,061.50x = 291,264.90 × 121,637.50
  4. Step 4: Simplify right side
    211,061.50x = 35,428,734,273.75
  5. Step 5: Solve for x
    x = 35,428,734,273.75/211,061.50
  6. Step 6: Final answer
    x = 167,859.77

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.